/Engine/Source/Runtime/CoreUObject/Public/UObject/UObjectBaseUtility.h
Version ofGetFullName()that eliminates unnecessary copies and appends an existing string.
void GetFullName ( const [UObject](API\Runtime\CoreUObject\UObject\UObject) * StopOuter, [FString](API\Runtime\Core\Containers\FString) & ResultString, EObjectFullNameFlags Flags ) const